Add 15/42 and 54/5, Solve 15/42 + 10 4/5 as a fraction

Add 15/42 and 54/5

1^st number: 15/42, 2^nd number: 10 4/5

15/42 + 54/5 is 781/70.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
15/42 = 15 × 5/42 × 5 = 75/210
Likewise, for the 2nd fraction, since 5 × 42 = 210,
54/5 = 54 × 42/5 × 42 = 2268/210
Add the two like fractions:
75/210 + 2268/210 = 75 + 2268/210 = 2343/210
2343/210 simplified gives 781/70
So, 15/42 + 54/5 = 781/70
In mixed form: 1111/70

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